Which of the following materials is commonly used to protect against corrosion in cooling towers?

Stainless steel is widely used in cooling towers primarily due to its outstanding resistance to corrosion. In cooling tower applications, where the materials are frequently exposed to water and various chemicals, stainless steel maintains its integrity and does not easily deteriorate, which is essential for ensuring longevity and operational efficiency.

The composition of stainless steel—primarily iron alloyed with chromium—forms a protective oxide layer that prevents the underlying metal from corroding when exposed to moisture and atmospheric conditions. This characteristic makes it particularly suitable for environments where water is present, such as in cooling towers, where water quality and chemical exposure can vary.

While plastic, aluminum, and galvanized steel have their own applications, they do not offer the same level of corrosion resistance as stainless steel in a cooling tower context. Plastic can be effective in certain applications but may not withstand high temperatures or structural stresses as well as stainless steel. Aluminum, while lightweight and resistant to corrosion, has limited use in applications where structural integrity and high heat resistance are required. Galvanized steel can provide a protective layer against corrosion, but the zinc coating can wear off over time, especially in aggressive environments, leading to potential corrosion issues. Thus, stainless steel stands out as the most reliable option for protecting against corrosion in cooling